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Finding the Fourth Proportional to 8,636,881.78, 12,946,652.43 and 2,953,219.06

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Solution

The fourth proportional to 8,636,881.78, 12,946,652.43 and 2,953,219.06 is: 4,426,863.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636,881.78 : 12,946,652.43 = 2,953,219.06 : x
  2. Step 2: Convert to fraction form
    8,636,881.78/12,946,652.43 = 2,953,219.06/x
  3. Step 3: Cross multiply
    8,636,881.78x = 12,946,652.43 × 2,953,219.06
  4. Step 4: Simplify right side
    8,636,881.78x = 38,234,300,719,471.31
  5. Step 5: Solve for x
    x = 38,234,300,719,471.31/8,636,881.78
  6. Step 6: Final answer
    x = 4,426,863.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.